.nav_box {
    display: flex;
    flex-direction: row;
    position: absolute;
    top: 6rem; left:50%;
    transform: translate(-50%, 0);
    z-index: 99;
    li {
        color: rgba(255, 255, 255, 0.8);
        background-color: rgba(15, 89, 142, 0.3);
        cursor: pointer;
        text-align: center;
        border: 0.2rem solid rgba(15, 89, 142, 0);
        border-radius: 0.4rem;
        margin-right:1.2rem;
        &:last-child{
            margin-right:0;
        }
        a {
            font-size:1.4rem;
            display: block;
            padding: 0.7rem 3rem;
            height: 100%;
        }
        &.active {
            border-color: #3f9df3;
            a{
                font-weight: 500;
                color: rgba(45, 205, 255, 1);
                text-shadow: 0 5px 5px rgba(0, 0, 0, 0.25);
            }

        }

    }
}
.returnBtn {
    cursor: pointer;
    position: absolute;
    z-index: 9999;
    top: 150px;
    right: 31%;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.8);
    background-color: rgba(15, 89, 142, 0.3);
    width: 100px;
    height: 30px;
    line-height: 25px;
    text-align: center;
    border: 3px solid rgba(15, 89, 142, 0);
}
.returnBtn:active {
    font-weight: bold;
    color: rgba(45, 205, 255, 1);
    border-color: #3f9df3;
    text-shadow: 0 5px 5px rgba(0, 0, 0, 0.25);
}
